Tandy Color Computer 3 TRS-80 Diagnostic Manual Download | Manualshive

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Summary of Contents for Color Computer 3 TRS-80

Page 1: ...TANDY Technician Series Diagnostics Software TANDY Color Computer 3 Diagnostics Manual NATIONIL TECHNICAL SUPPORT AND TRAINING...

Page 2: ...ic software or manual to repair modify or alter any TANDY computer in any manner l Many parts of the computer electronics are very sensitive and can be easily damaged by improper servicing We strongly...

Page 3: ...ation All Rights Reserved IRQTST Diagnostics Software 01987 Tandy Corporation All Rights Reserved FRQTSTDiagnostics Software e1987 Tandy Corporation All Rights Reserved COLORS64Diagnostics Software Cl...

Page 4: ...iagnostic Software Cl987 Tandy Corporations All Rights Reserved Reproduction or use without express written permission from Tandy Corporation of any portion of this manual is prohibited While reasonab...

Page 5: ...ER PRODUCTS COLOR COMPUTER 3 DIAGNOSTICS Table of contents INTRODUCTION COLORCOMPUTER 3 DIAGNOSTICS MEMC03 IRQTST FRQTST COLORS64 COC03VID CPUSPEED PSUEDO PALTEST VPAGE MEMBANK VDGMODES DIAGNOSTIC SOF...

Page 6: ...IN FRQTST BIN Tests all the memory of the Color Computer 3 up to 512k Color Computer Normal Interrupts test Color Computer Fast Interrupts test COLORS64 BIN Displays all 64 Colors of the Advanced Colo...

Page 7: ...nuous This flags the ram test whether it should test all memory once or continuously Press 2 to invoke the memory test The screen displays the pass number the test mode write or verify and the memory...

Page 8: ...e language files and must be loaded and then executed The proper loading and executing of the programs is shown below If testing normal interrupts load IRQTST by typing type LOADM IRQTST BIN and press...

Page 9: ...id pattern Use the joystick to move the cursor over one of the blocks in the grid The background color of the screen will change to the color of the block under the joystick cursor Press the fire butt...

Page 10: ...k all of the alpha modes Attributes affect the foreground and background colors of a character and can cause blinking and underline The test will then cycle through all the alpha modes 32 40 64 80 cha...

Page 11: ...when under the highest color computer 2 graphics mode Normally this graphics mode would produce only two colors white and black or green and black but by drawing the pixels close together the artifac...

Page 12: ...ed the test will display All Pallets OK VP AGE BAS VPAGEis a Basic program which tests the Video Paging Register of the Advanced Color Video Chip ACVC The program uses a machine language routine to fi...

Page 13: ...l be segment zero for a 512k machine according to the memory size entered If the memory segments are not switching then check the Advanced Video Color Chip The MMU banking section of the ACVC may be f...

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